# Announcing Etherlink 6.3: a security bugfix for Farfadet

**URL:** https://forum.tezosagora.org/t/announcing-etherlink-6-3-a-security-bugfix-for-farfadet/7068
**Category:** Research and Development
**Created:** [May 14, 2026, 2:04pm UTC](https://forum.tezosagora.org/t/announcing-etherlink-6-3-a-security-bugfix-for-farfadet/7068 "2026-05-14T14:04:05Z")
**Posts on this page:** 2
**Page:** 1

<div class="post-metadata">

### Author: ![NomadicLabs](https://forum.tezosagora.org/user_avatar/forum.tezosagora.org/nomadiclabs/32/763_2.png) [@NomadicLabs](https://forum.tezosagora.org/u/NomadicLabs)
#### Post date: [May 14, 2026, 2:04pm UTC](https://forum.tezosagora.org/t/announcing-etherlink-6-3-a-security-bugfix-for-farfadet/7068/1 "2026-05-14T14:04:05Z")

</div>

_This is a joint post from Nomadic Labs, TriliTech, and Functori._

We have recently received responsible disclosure of two vulnerabilities affecting Etherlink mainnet and its associated infrastructure, through our [security bug bounty platform](https://tezos.foundation/ecosystem-bug-bounty-program/).

**These vulnerabilities have not been exploited so far—we have not witnessed any attempts to exploit them either.**

We have prepared a bugfix kernel upgrade addressing these issues swiftly, Etherlink 6.3, which has already been submitted to Etherlink’s [Fast governance](https://governance.etherlink.com/governance/fast) mechanism earlier today.

Should the governance process be successful, the kernel upgrade will activate on Etherlink mainnet on Saturday, 16 May 2026.

We will publish a full post-mortem report upon a successful activation of Etherlink 6.3

🙏Thank you for your continued support for Etherlink.

We’d like to also thank the security researchers that reported these vulnerabilities through our bug bounty platform.

## **📅** CTA: Tezos bakers! Please upvote Etherlink 6.3

We need your support to ensure these fixes are swiftly deployed. The kernel upgrade proposal (`0005d2c53f57df68b2027ecf592169cf8ce0ee7b3a6ecc215d58e42733c6eed131`) has already been injected in the current proposal period.

- **Proposal period vote:** fast governance period **1231** , spanning between L1 levels [#13,199,089](https://tzkt.io/13199089) (May 14 13:55 UTC) and [#13,202,688](https://tzkt.io/13202688) (May 14 19:55 UTC).

- **Promotion period vote:** fast governance period **1232** ], spanning between L1 levels [#13,202,689](https://tzkt.io/13202689) (May 14 19:55 UTC) and [#13,206,288](https://tzkt.io/13206288) (May 15 01:55 UTC).

👉 Remember that Etherlink **fast** governance periods last ~6 hours, which means bakers would need to vote up to two times within 12 hours to participate in both votes.

Bakers can cast their votes in a few clicks with Etherink’s governance [explorer UI](https://governance.etherlink.com/), or using [TezGov](https://gov.tez.capital/). We provide further voting instructions to vote with Octez CLI below.

Don’t hesitate to reach out if you need our help to make sure you can cast your votes in time.

---

<div class="post-metadata">

### Author: ![NomadicLabs](https://forum.tezosagora.org/user_avatar/forum.tezosagora.org/nomadiclabs/32/763_2.png) [@NomadicLabs](https://forum.tezosagora.org/u/NomadicLabs)
#### Post date: [May 14, 2026, 2:04pm UTC](https://forum.tezosagora.org/t/announcing-etherlink-6-3-a-security-bugfix-for-farfadet/7068/2 "2026-05-14T14:04:16Z")

</div>

## Annex: voting instructions

Bakers can cast their votes in a few clicks with Etherink’s [governance explorer](https://governance.etherlink.com/), or using [TezGov](https://gov.tez.capital/). It is also possible to vote using Octez CLI, with the following commands:

### Proposal Period (fast governance period 1231)

The Proposal period vote is currently underway: it started on L1 level [#13,199,089](https://tzkt.io/13199089) (May 14 13:55 UTC) and [#13,202,688](https://tzkt.io/13202688) (May 14 19:55 UTC).

You can upvote the Etherlink 6.3 kernel upgrade proposal using the following Octez CLI command:

```auto
octez-client call KT1DxndcFitAbxLdJCN3C1pPivqbC3RJxD1R from <baking key or voting key> \
  --entrypoint "upvote_proposal" \
  --arg "0x0005d2c53f57df68b2027ecf592169cf8ce0ee7b3a6ecc215d58e42733c6eed131"

```

### Promotion Period (fast governance period 1232)

If the Proposal period is successful, the Promotion period would span between between L1 levels [#13,202,689](https://tzkt.io/13202689) (May 14 19:55 UTC) and [#13,206,288](https://tzkt.io/13206288) (May 15 01:55 UTC).

You can vote for the Etherlink 6.3 kernel upgrade proposal using the following Octez CLI command:

```auto
octez-client call KT1DxndcFitAbxLdJCN3C1pPivqbC3RJxD1R from <baking_key or voting_key> \
  --entrypoint "vote" --arg '"yea"'

```

See this [documentation entry](https://docs.etherlink.com/governance/kernel-governance) for further instructions on how to participate in Etherlink’s governance, and  
Don’t hesitate to reach out if you need our assistance to cast your votes.